Add versions of isPointIn*() that take a Path parameter.

Source/core/html/canvas/CanvasRenderingContext2D.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012, 2013 Intel Corporation. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
@@ skipping 981 matching lines @@
     clipInternal(m_path, windingRuleString);
 }
 
 void CanvasRenderingContext2D::clip(DOMPath* domPath, const String& windingRuleString)
 {
     clipInternal(domPath->path(), windingRuleString);
 }
 
 bool CanvasRenderingContext2D::isPointInPath(const float x, const float y, const String& windingRuleString)
 {
+    return isPointInPathInternal(m_path, x, y, windingRuleString);
+}
+
+bool CanvasRenderingContext2D::isPointInPath(DOMPath* domPath, const float x, const float y, const String& windingRuleString)
+{
+    return isPointInPathInternal(domPath->path(), x, y, windingRuleString);

[Rik, 2014/02/25 07:46:45]

should you check if the pointer is valid?

+}
+
+bool CanvasRenderingContext2D::isPointInPathInternal(const Path& path, const float x, const float y, const String& windingRuleString)
+{
     GraphicsContext* c = drawingContext();
     if (!c)
         return false;
     if (!state().m_invertibleCTM)
         return false;
 
     FloatPoint point(x, y);
     AffineTransform ctm = state().m_transform;
     FloatPoint transformedPoint = ctm.inverse().mapPoint(point);
     if (!std::isfinite(transformedPoint.x()) || !std::isfinite(transformedPoint.y()))
         return false;
 
     WindRule windRule = RULE_NONZERO;
     if (!parseWinding(windingRuleString, windRule))
         return false;
 
-    return m_path.contains(transformedPoint, windRule);
+    return path.contains(transformedPoint, windRule);
 }
 
+bool CanvasRenderingContext2D::isPointInStroke(const float x, const float y)
+{
+    return isPointInStrokeInternal(m_path, x, y);
+}
 
-bool CanvasRenderingContext2D::isPointInStroke(const float x, const float y)
+bool CanvasRenderingContext2D::isPointInStroke(DOMPath* domPath, const float x, const float y)
+{
+    return isPointInStrokeInternal(domPath->path(), x, y);
+}
+
+bool CanvasRenderingContext2D::isPointInStrokeInternal(const Path& path, const float x, const float y)
 {
     GraphicsContext* c = drawingContext();
     if (!c)
         return false;
     if (!state().m_invertibleCTM)
         return false;
 
     FloatPoint point(x, y);
     AffineTransform ctm = state().m_transform;
     FloatPoint transformedPoint = ctm.inverse().mapPoint(point);
     if (!std::isfinite(transformedPoint.x()) || !std::isfinite(transformedPoint.y()))
         return false;
 
     StrokeData strokeData;
     strokeData.setThickness(lineWidth());
     strokeData.setLineCap(getLineCap());
     strokeData.setLineJoin(getLineJoin());
     strokeData.setMiterLimit(miterLimit());
     strokeData.setLineDash(getLineDash(), lineDashOffset());
-    return m_path.strokeContains(transformedPoint, strokeData);
+    return path.strokeContains(transformedPoint, strokeData);
 }
 
 void CanvasRenderingContext2D::clearRect(float x, float y, float width, float height)
 {
     if (!validateRectForCanvas(x, y, width, height))
         return;
     GraphicsContext* context = drawingContext();
     if (!context)
         return;
     if (!state().m_invertibleCTM)
@@ skipping 1384 matching lines @@
     const int focusRingWidth = 5;
     const int focusRingOutline = 0;
     c->drawFocusRing(path, focusRingWidth, focusRingOutline, focusRingColor);
 
     c->restore();
 
     didDraw(dirtyRect);
 }
 
 } // namespace WebCore